SimMars is a mod for SimCity 4 taking the game to Mars. It will bring new buildings, transportation systems, user-interface and music and will replace the Maxis SimCity 4 content as far as possible, giving you the feeling to play a colony on Mars.
The mod is still at beta stage. Beta 3 was released in October 2010.

SimMars Beta 3 is in the works and coming closer to packacking stage before release.

The main part of new content is new buildings, there are more than 100 new buildings of all kinds! And we're still adding more before the release. There will also be a seperate SimMars launcher so you can play SimCity 4 and SimMars with a single click.

We are looking for modders who can help with replacing the transit elements (ie. rails, vehicle models etc.).